| 학회 |
한국고분자학회 |
| 학술대회 |
2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터) |
| 권호 |
44권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
A new D-D type conjugated polymer containing a fused selenophene unit for organic field effect transistors |
| 초록 |
Extended π-conjugated system is one of most common strategy to enhance the charge carrier mobility in organic electronics. We synthesized a new conjugated polymer (PDSSTV) with a fused-ring-structure, diseleno[3,2-b:2',3'-d]selenophene (DSS). The optical band gap of PDSSTV was found to be 1.70 eV in both solution and film due to its pre-aggregated state even in solution using UV-Vis absorption spectroscopy. Density functional theory (DFT) analysis revealed a twisted conformation of PDSSTV arising from the large size of Selenium in DSS. Upon thermal annealing at 250℃, the intensity of the out of plane order diffraction peak was greatly increased and the crystalline coherence length was also improved in both (100) lamella d-spacing and (010) π-π stacking directions using GIXD analysis. The charge carrier mobility of PDSSTV was probed by fabricating OFETs with a top-gate/bottom contact (TG/BC) architecture to obtain 2 cm2 V-1 s-1 under relatively low operating voltage of -30 V. |
| 저자 |
김인복1, 장수영1, 강민지2, Fei Zhuping3, 정은환4, McCarthy-Ward Thomas3, 임대희1, 김연주1, Mathur Sanjay4, Heeney Martin3, 김동유1
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| 소속 |
1광주과학기술원, 2한국과학기술(연), 3Imperial College London, 4Univ. of Cologne |
| 키워드 |
conjugated polymer; selenophene; organic field effect transistor
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| E-Mail |
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